Assigning Of Terminals - Gruppo Ferroli FZ4B Instrucciones De Uso E Instalación

EN

2.3 ASSIGNING OF TERMINALS

After switching off the power to the boiler, carry out the wiring using the terminal block on the zone control unit (fi g.5).
For the low voltage connections (terminals: 17-33) use cables of section 2.5mm2 max., making sure their path is not the same as that of the mains power cables. The max.
length of cables must not exceed 50 m. For the connections to mains voltages (terminals 5-16) and Earth (terminals 1-4), use cables of section 4.0mm2 max.
The permanent power supply of the zone controller must be connected to terminals 5(L) and 6(N); the cable for communication with the boiler board (OpenTherm Remote
Timer Control terminals) must be connected to terminals 32 and 33 (BLR); a possible External Probe (optional) must be connected to terminals 30 and 31 (T4) if the con-
nection is not available on the boiler board. For the rest of the wiring, use the diagrams given in the following sections.
Room adjustment can occur by means of the Remote Timer Control (OpenTherm) and/or Room Chronothermostats (only with voltage-free contact). In any case, make
sure to use at least one Remote Timer Control to facilitate the user and installer settings.
Generator demand
Regardless of the type of layout to be managed, the zone controller can demand heat from the generator in 3 different ways:
Therefore, fi rst of all it is necessary to select one of these 3:
1 - Communicating: Generator equipped with Opentherm protocol
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
2 - Stand alone 1: Generator without Opentherm protocol (ON/OFF)
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
3 - Stand alone 2: Generator without Opentherm protocol (ON/OFF) with temperature control
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
FZ4B
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
FZ4B
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
FZ4B
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
C
CONTROLLO ZONE FZ4B
fi g. 5
Carry out the "boiler" A connection, disconnecting the relay card (output with
voltage-free contact) code SK16504.
A - Connect to boiler Opentherm Remote Timer Control (139)
A
Carry out the "boiler" B connection, connecting the relay card
B
(output with voltage-free contact) code SK16504
SCHEDA RELÉ
B - Connect to boiler on/off room Thermostat (72)
SK16504
Carry out the "boiler" B connection, connecting the relay card (output
B
with voltage-free contact) code SK16504.
Carry out the "sensor" C connection.
SCHEDA RELÉ
B - Connect to boiler on/off room Thermostat (72)
SK16504
C - Generator delivery sensor
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